Troubleshooting with a Test Lamp
WARNING: This page is about a different car, the 2010 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
J-35616-200: Test Light - Kit
CAUTION:
Refer to Test Probe Caution
.
A test lamp can simply and quickly test a low impedance circuit for voltage. A DMM should be used instead of a test lamp in order to test for voltage in high impedance circuits. While a test lamp shows whether voltage is present if the impedance is low enough, a DMM indicates how much voltage is present. In other words, if there is not enough current, the test lamp will not illuminage even though voltage is present.
The J-35616-200: Probe is Micro-Pack compatible and comprised of a 12-volt light bulb with an attached pair of leads.
To properly operate this tool use the following procedures.
When testing for voltage:
- Attach one lead to ground.
- Touch the other lead to various points along the circuit where voltage should be present.
- When the bulb illuminates, there is voltage at the point being tested.
When testing for ground:
- Attach one lead to battery positive voltage.
- Touch the other lead to various points along the circuit where ground should be present.
- When the bulb illuminates, there is ground at the point being tested.